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TM 10-4930-248-13&P
5-2.
CCR NOZZLE
ASSEMBLY
REPAIR
- continued.
d.
Testing.
After repair, the CCR Nozzle should be tested to ensure proper operation.
A typical
setup for testing is shown.
WARNING
Drycleaning
solvent, AA 711 Types I and II, used to clean parts is potentially
dangerous
to personnel
and property.
Use in a well-ventilated
area as the
fumes are dangerous
if inhaled.
Avoid repeated and prolonged skin contact.
Do not use near open flame or excessive heat. Flash point of solvent is 130*F.
NOTE
There shall be no evidence of leakage during flow conditions, binding, valve
chatter, distortion,
or requiring
excessive force at connecting and
disconnecting
of the nozzle to the test adapter.
(1)
Functional
Test.
(a)
Position nozzle handle (1) in the CLOSED (no flow) position and connect nozzle to
test adapter
outlet (2) and test adapter
inlet (3).
(b)
Open valve (8).
(c)
Adjust pump (5) to 25 psig at nozzle inlet gage (4).
(d)
Move nozzle handle (1) to the OPEN (flow) position to start flow.
(e)
Close valve (8). Flow indicator
at back of nozzle assembly
(9) should be visible,
indicating
flow has stopped.
(f)
Move nozzle handle (1) to the CLOSED (no flow) position.
(g)
Open valve (8).
(h)
Increase pump (5) pressure
to 65 psig at nozzle inlet gage (4).
W
Slowly open the nozzle (1) handle to the OPEN (flow) position.
0)
Close valve (8). Flow indicator
at back of nozzle assembly
(9) should be visible,
indicating
flow has stopped.
W
Move nozzle handle (1) to the CLOSED (no flow) position.
(1)
Remove nozzle assembly
(9) from test adapter outlet (2). There should be no
leakage
from discharge
end of nozzle.
(m)
Reduce pump (5) pressure
to zero psig at gage (4).
(n)
Disconnect
nozzle assembly
(9) from test adapter
inlet (3) and install dust caps.
5-18
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